Now showing items 1-10 of 197
Carnitine analogues as topical, microbicidal spermicides
(United States Patent and Trademark Office, 2003-12-02)
Acylcarnitine analogues having alkyl side chains of 10 to 30 carbon atoms display excellent spermicidal and anti-HIV activity, a well as being potent inhibitors of the growth of Candida albicans.
Self-compensating fiber optic flow sensor having an end of a fiber optics element and a reflective surface within a tube
(United States Patent and Trademark Office, 2006-05-16)
A flow rate fiber optic transducer is made self-compensating for both temperature and pressure by using preferably well-matched integral Fabry-Perot sensors symmetrically located around a cantilever-like structure. Common ...
Chimeric infectious DNA clones, chimeric porcine circoviruses and uses thereof
(United States Patent and Trademark Office, 2007-10-02)
The present invention relates to infectious DNA clones, infectious chimeric DNA clones of porcine circovirus (PCV), vaccines and means of protecting pigs against viral infection or postweaning multisystemic wasting syndrome ...
Recombinant vaccine for diseases caused by encapsulated organisms
(United States Patent and Trademark Office, 2001-12-04)
Vaccines for diseases caused by normally encapsulated organisms are produced by genetically modifying those organisms by deleting the genes encoding for capsule synthesis or a portion thereof sufficient to produce ...
Wideband compact planar inverted-F antenna
(United States Patent and Trademark Office, 2004-09-21)
An improved low profile antenna of the PIPA style is formed from a single piece of useful conductive material and includes a first plate spaced apart from an elongated ground plate. The first and ground plates are ...
Chemical processes using aryl diphosphine containing catalysts
(United States Patent and Trademark Office, 2000-03-28)
The present invention provides novel water-soluble diphosphines having the formula ##STR1## wherein X, Y, R.sub.1-18 and n are defined herein, and which can be complexed with a transition metal to form a novel catalyst ...
Current sensing in multiple coupled inductors by time constant matching to leakage inductance
(United States Patent and Trademark Office, 2007-06-19)
Voltage regulators often have coupled output inductors because coupled output inductors provide improvements in cost and efficiency. Coupled inductors are often used in multi-phase voltage regulators. Feedback control of ...
Step-down buck converter with full bridge circuit
(United States Patent and Trademark Office, 2004-06-29)
A power converter with high efficiency, low component count, and high step down conversion capability. The converter has a full bridge circuit connected to a pair of buck output circuits. The full bridge circuit and buck ...
Magnetoelectric magnetic field sensor with longitudinally biased magnetostrictive layer
(United States Patent and Trademark Office, 2006-04-04)
A magnetoelectric magnetic field sensor has one or more laminated magnetostrictive layers and piezoelectric layers. The magnetostrictive layers are magnetized by a bias magnetic field in a longitudinal, in-plane direction. ...
Methods of improving centrifugal filtration
(United States Patent and Trademark Office, 2002-08-27)
Methods of improving the efficiency of solid-liquid separation during centrifugal filtration have been developed. They consist of increasing the pressure drop across the filter cake using extraneous means such as increasing ...